Heinrich trautner



Patented June 20, i899. H. TRAUTNEB.

URGAN (Application led Feb. 4, 1899.)

)A l I@ I No. 627,2al.

l(No Model.)

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UNITED STATES PATENT OFFICE.

HEINRICH TRAUTNER, OF KAISERSLAUTERN, GERMANY.

ORGAN.

SPECIFICATION forming part of Letters Patent No. 627,281, dated June 20, 1899.A

I Application iiled February 4,1899. Serial No. 704,494. (No model.) v l T0 cir/ZZ whom t muy concern/.j

Be it known that I, HEINRICH TEAUTNER, royal professor of the seminar and ofcial inspector of organs, residing at Kaiserslautern, in the Kingdom of Bavaria, Germany, have linvented new and useful Improvements'in Organs, (for which I have applied for Letters Patent in Germany, F. 6,015,1/51, dated August 5, 1898, and in France, No. 272,424, dated December 20, 1898,) of which the following is a specification.

A slight alteration of the temperature from that prevailing at the time of tuningis sufficient to cause such a difference of pitch between the reedwork and iiue-pipe registers as to preclude their conjoint employment. The pitches, however, will be alike-that is to say, will be maintained parallel or in tune-if a zinc bar subjected to expansion and contraction through changes of temperature be caused to so act on the tongue of the reed as to cause it to vibrate in consonance with the vibrations of the column of air in the flueppe. rlhis adjust-ment of the tuning-wire specially depends on the specific elasticity of the tongue, as well as on the progressive increase in the size of the tongues, and generally also on the whole individual quality of the pipe. The said adjustmentl must not therefore be effected generally for a number of pipes, but should be effected separately for each by means of an accurately-proportioned lever, the construction of the compensating mechanism being as follows, reference being had to the accompanying drawings, wherein- Figure 1 is an elevation of the compensation device, and Fig. 2 shows detail views of the reed and tuning-crutch.

From an upright standard a a', Fig. 1, projects a horizontal bar of zinc b b', provided with lugs c c', the first of which is situated at about 0.75 meter from the base d, whereby the zinc bar is attached to thestandard a of, this being the point at which the variations of length of the zinc bar may begin to produce the average movements of the crutch, assuming a movement of 0.18 millimeter at h for a thermal change within 8 Raumur. Each lug c has a slot which coincides with a slot e ina bell-crank levert g h, made of zinc, pivoted to the bar m m at g and connected to the lug by a bolt t, adjustable in both slots and fixed (bored in the zinc) in accordance with the tuning of the reed. The connection of the zinc bar with the lever is therefore such that not only is the movement of the zinc bar transmitted to the lever, but by the adjustment of the bolt the ratio of the lever is determined according to the requirement of the tongue. To the otherarm of the lever the tuning-wire f is adj ustably connected by nuts, as at 7L, at which point the predetermined movement'of the lever is imparted to the tuning-wirefand at Zt to the crutch of the wire which bears upon the tongue l of the reed. The tongue must therefore be such ythatv its length, or rather its vibrations, may be in accordance with the vibrations of the column of air in the due-pipe. The standard a a and bar m m' are iixtures, and for the former, which must resist the thrust of the zinc bar, a wall may be substituted. The expansion of the bar m fm', which with a coefficient i 0.000003 need scarcely be taken into consideration, is supposed to be allowed for when regulating the adjustment of the crutch starting from the eight-foot clarinet, and a thermal change of 8 Raumur, the average Inovement or the average travel of the crutch for O 0.60 millimeter (the maximum) at h, from which it diminishes by degrees, 0.18 millimeter, (the minimum,) at c 0.30 millimeter, and at c- 0.36 millimeter.

The progression in the (average) motion of the crutch, or rather in the motion of the longitudinal parts of the'zinc bar, requires that ythe lugs should be arranged five centimeters apart, and it will be therefore necessary to provide the zinc bar with lugs on both sides.

Now what I claim, and desire to secure by Letters Patent, is the following:

1. In a device for regulating the tuning of an organ or the like a bar of an extensible metal as zinc, levers connected at different points with the said bar and acting on means to regulate'the pitch of the single reeds, substantially as described.

2. In adevice for regulating the tuning of an organ or the like the combination of a zinc bar b b' with levers fi g h and tuning-wiresf substantially as described.

3. In a device for regulating the tuning of In testimony whereof I have signed my name to this specification in the presence of tWo subscribing witnesses.

HEINRICH TRAUTNER.

Witnesses:

ERNST KAUFMANN, JACOB ADRIAN.

an organ or the like the combination of an extensible metal bar b b having lugs c dat different points of its length, With bell-orank levers 1l g 7L connected with the said lugs by I a pin and slot each and with tuning-Wires f acting on the tongues l, substantially as described. 

